Trolls Mountain Fortress: I like this set. It has a lot of useful parts, and the figs look great. (I think the troll king's crown is brass, which is a first.) The new armored ogres (giant trolls) look... okay. I like the improvements (especially that tattoo), but I'm just not that thrilled by the ogres in general. They're too static; their only range of motion is at the shoulders and wrists.
Drawbridge Defense: I'm underwhelmed by the set design itself, but the minifigs are great. I'll definitely pick up one for the figs alone. I'm seeing the gold knight as a king's champion character. I might piece the set itself out, or I might build it for the sake of having it assembled. I probably won't buy more than one of this set, though. Too many unique figures that I wouldn't find uses for duplicates of.
Kings Battle Chariot: Meh. I don't see anything exciting here, aside from two orc shields in the same set. I already have one king. I guess I could switch out the head and remove the helmet to make him a prince or something (I did something similar to make a queen with my duplicate princess), but it's not like I need anything that's in this set. I might buy this set for the sake of completion, but of all the sets I've seen, I'm most likely to pass this one up.
I found some better pictures of this set on Flickr, but I'm not sure if they're fair game for linking. Or are all images of these sets now cleared for linkage?
"A warrior is always joyful because his love is unalterable and his beloved, the earth, embraces him and bestows upon him inconceivable gifts."
-- Don Juan, Tales of Power by Carlos Castaneda